Slice for papermaking machinery



Dec. 21, 1943.

w. M. WILSON SLICE FOR PAPER MAKING MACHINERY Filed Nox r. 1, 1940 2 Sheets-Sheet 1 Williamnmlson,

Dec. 21, 1943. w. M. WILSON 2,337,288

SLICE FOR PAPER MAKI NG MACHINERY Filed Nov. 1i 1940 2 Sheets-Sheet 2 VVillzamMWZsqn,

. v V MM Patented Dec. 21, 1943 UNITED STATES PATENT- -2,337,zss

oFFICE 1 Claim.

This invention relates to paper making machinery and more. particularly to an improved form of slice.

' At diii'erent stages of the operation of forming the stock or stuif to paper, the water expressed from the stock and its carrying support or felt by the coacting rolls accumulates in the angular 7 space 01 recess to'prevent this water from running back on the felt. The accumulated water also tends to saturate the sheet of paper, resulting in dirty feltscut to those skilled in An embodiment of the invention is shown in the accompanying drawings.

Fig. 1 is a fragmentary elevational view with parts shown in cross-section: Fig. 2 is an end elevation of the-slice; i

Fig. 3 is a cross-section on line 3-3 of Fig. 6

Fig. 4 isa fragmentary view of the journal mounting for the slice; I

Fig. 5 is a side elevation of a series of primary rolls and a press roll with slice applied;

Fig. 6 is a top plan view of the slice, and

Fig. 7 is an end elevation of the slice.

In the several figures, I designates the standard or support for the primary rolls, and 2 the There are a series of these rolls comprising it defective and ofshort life. The slice indicated generally by the numeral 4 comprises a strip of sheet metal in the form of a gutter extending across the width of the felt part of the conventional cylinder paper -pre1'erred construction, but

foreign matter from lodging to collect the accumulated waterat the nip of the rolls and direct it over the edges of the felt. Said greater radius than the forward bend. portions of the strip form the side walls of the gutter which are preferably of diflerent heightsfor the purpose hereafter explained. This isv the the nature of the course be from that slice is provided with journals-4d and supported in Journal bearings ie in the standards i. It will be seen that the slice is a trough-like structure and forms a gutter to collect and discharge by gravity the excess water expressed adjacent the nip of the rolls, the-water eing discharged from the gutter at the edges of the felt.

The rounded forward end prevents the slice from cutting into the felt andalso prevents between the felt slice is preferably constructed of light and braced to give bending and twisting. The light weight slice can be handled quickly and easily-a highly important feature in the operation of any paper machine.

In some situations it is necessary to provide the slice with a tensioning device, that is, a device which will exert pressure upon the forward end of the slice and cause it to engage the felt with more pressure at that point. Said tension device'comprises, in the embodiment shown, a detachable hook 5 engaging the rear rounded end of the slice,. a rod 6 connected with said hook and bearing upon the forward rounded end of the slice. A cable V to produce the stress on the slice. There is a tension device at each end or the slice, one only of the tension devices being shown. in Fig. 1. As shown in Fig. 5, slices are provided for other rolls and it is obvious that the slices may be employed at any stage in the series of cylinders.

I claim: 7

In a paper making machine of the cylinder to form a passageway for collecting the accumuthe rolls and having its edge rounded inwardly lated water at the nip of the rolls, the rear side of the slice also having its edge rounded inwardly to form a barrier to prevent splashing 5 and overflow of the collected Water.

WILLIAM M. WILSON. 

